[cogogo]

I’m sure they have considered this and/or doing it already but you’d only need a small centrifuge to simulate gravity for an experiment.

[Filligree]

A small centrifuge won't work; you get a strong coriolis effect. A large centrifuge could, but the ISS doesn't have one of those. It would need to be huge to be absolutely sure your data is accurate.

[cogogo]

Late to reply back but I’m not sure why that matters when all you are looking for is roots to have enough stimulation to uptake water.